Improvement in sash-fasteners



WILLIAM BUEOHLEY AND THEODORE THORN, OF POTTSVILLE, PA.

'I IMPROVEMENT IN SASH-FASTENERS.

Specification forming part of Letters Patent No. 161,655, dated April 6,1875; application filed March 15, 1875.

To all whom it may concern Be it known that we, WILLIAM BUEGHLEY andTHEODORE THoRN, of Pottsville, in the county of Schuylkill and State ofPennsylvania, have invented certain new and useful Improvements inSash-Locks; and we do hereby declare that the following is a full,clear, and eXact description thereof, which will'enable others skilledin the art to which it pertains to make and use the saine, referencebeing had to the accompanying drawings and to the letters of referencemarked thereon, which form a part of this specification.

The nature of our invention consists in the novel construction andarrangement of a friction spring-lock for locking the sash, the springhaving lugs and being operated by a shaft provided with a crank, andarms, as will be hereinafter more fully set forth.

In the annexed drawing, Figure l is a side elevation. Fig. 2 is acentral vertical section, showing the means I preferably employ forraising and lowering the sash; and Fig. 3 is an interior face-view of mylocking device, showing the springs, lugs, crank-shaft, and arms inposition.

A represents an ordinary window-frame, B, the lower sash; and (l, theupper sash. In the sill of the windowframe A, on each side, is inserteda step, a, hid within the sill. In each step crests the lower end of avertical screw, D, said end ofthe screw passing through a hole in thetop of the sill, so as to rest in the step. The screw-rod D passes upthrough a vertical groove made in the edge of the vertical side rail ofthe lower sash B, and the up-V per end of the screw is pointed, and hasits bearing in the lower recessed end of a setscrew, b, which is passedthrough a nut, h, secured to the side rail of the window-frame A. In thegroove in the sash, near the lower end, is a nut, d, through which thescrew-rod D passes, and the groove is made large enough for the sash topass over the nut 7L and setscrew b. The screws or screw-rods D haveshort curves, and might more properly be called spiral or twisted.

It will readily be seen that, by means of the nuts d d, when the sash Bis raised, the spiral rods D D revolve on their pivots a and b. By thismeans the ascent of the sash is relieved of nearly all its friction,besides relieving itself of its own dead weight, as the least upwardmovement causes the rods to revolve. The natural movement of the twocombined is to climb up on its short curve, which actually causes thesash to rise as easily as if it was evenly balanced by weights.

To prevent the sash from falling too fast, and to lock the same, we usea spring frictionlock of our own invention, consisting of two springs, EE', arranged in the side rail of the window-frame, and provided at theirinner ends, respectively, with lugs c e. The lug e on the spring E bearsagainst the edge of the lower sash B, while the lug c on the spring Ebears against the sash C. The upper sash C is placed upon screw ortwisted rods in similar manner to those of the lower sash. The sprin gsEE force their respective lugs against the edges of the sash withsufficient pressure to prevent them from falling do wn, and at suitableintervals in the sash are made recesses, into which the lugs are forcedby their springs, and thereby locking the sash. 'Ihey are unlocked bymeans of a horizontal shaft, m, provided with a crank or knob, G, on itsouter end, and with two arms, n a', to operate on the ends of thesprings and press the same away from the sash.

In the top rail of the window-frame is a pulley, H, over which passes acord, p, attached to the upper sash C, and hanging down in front of thesame,.by means of which said sash can easily be operated. This isparticularly intended for churches or other buildings, where the windowsare too high to be reached from the floor. Having thus fully describedour invention, as well as the means we preferably employ for raising andloweringthe sash, what we claim4 as new, and desire to secure by LettersPatent, is-

The combination, with the recessed windowsash B G, of the springs E f',having lugs e e', and the shaft m, provided with crank G and arms a a',substantially as .and for the purposes herein set forth.

In testimony that we claim the foregoing as our own, we affix oursignature in presence of two witnesses.

- WILLIAM BUECHLEY.

THEODORE THORN. Witnesses:

ALBIN F. DAY, DANIEL WILLIAMS.

